HDR Pathological Image Enhancement Based on Improved Bias Field Correction and Guided Image Filter

Table 3

Data comparison of our method with other different image enhancement methods.

Algorithms	Evaluations
	PSNR; (dB)	SD	Mean	EME	Entropy; (bit)	Run time (second)
Original image		19.6614	132.1559	5.0345	6.4188	—
Frankle-McCann Retinex	10.8521	31.1252	203.9961	5.3093	7.0448	13.6394
SSR	14.5729	38.7156	171.2390	7.6546	7.2010	7.6829
MSR	15.0145	38.1384	168.5765	7.7727	7.1866	21.7126
DSIHE	7.9528	114.8437	150.2071	0.5732	4.4251	1.1934
MMBEBHE	7.8207	117.6716	138.5599	0.4534	4.1568	0.9758
RMSHE	8.0553	111.2631	160.3926	0.7006	4.6547	0.9987
RSIHE	8.2315	97.6331	184.7367	1.0570	5.2014	1.1761
Proposed	12.2576	43.9754	205.2157	8.2986	7.3341	3.7206